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Differential Responses to Environmental Conditions by Fungal Cells Sensitized by Heat Shock or UV Irradiation
Author(s) -
Fries Nils
Publication year - 1970
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1970.tb08892.x
Subject(s) - incubation , irradiation , shock (circulatory) , sodium , thermal shock , chemistry , casein , heat shock , biophysics , heat shock protein , biochemistry , materials science , biology , organic chemistry , medicine , physics , nuclear physics , composite material , gene
Cells of the ascomycele Ophiostoma multianulatum were sensitized to the supra‐optimal temperature of 30°C either by heat shock or by UV irradiation. At this incubation temperature the death rate of the heat‐shocked cells was higher than that of the irradiated cells. This difference was increased if hydrolysed casein was added to the incubation medium. The heat‐shocked cells were also killed faster at 30°C, if nitrogen instead of air was bubbled through the cell suspension. Heat shock, in contrast to UV irradiation, strongly increased the sensitivity to a high concentration of sodium chloride.